My Model 25 Gecado

[Wm.Traynor]

Angle grinder with a cut off wheel

Got it, thanks mate

[NTSOG]

G'day WT,

It's about time for a Gecado update and have you made a spring compressor yet?

Jim

[Wm.Traynor]

G'day WT,

It's about time for a Gecado update and have you made a spring compressor yet?

Jim

I have kept changing my mind about how to do things. I screwed and glued a couple of pieces of MDF to a 20 inch length of pine but they both have splits in them Installing the shortened G-Clamp turned out to be the easy part. Nothing was done today as we are "Entertaining" four grandchildren Talk about bedlam. To fix the MDF, I will glue in some pieces of dowel. Then I hope to put a brace behind the MDF part that resists the force of the spring during compression. This is complicated by the piece being at an angle to the line of force.
I got in to this spot of bother because the piece has a blind hole in it to accept the breech end of the compression tube. This hole was drilled with a spade bit and the bottom is lopsided. To accommodate this condition, the piece is turned at a slight angle to the line of force, so that both "prongs" of the breech bear evenly against the bottom of the hole.

I think this is a case of, "The road to Hell is paved with good intentions".

This, "Slight angle", complicates the making of the brace.

I will try to talk my wife in to taking some pics, to try to make things clearer but tomorrow will also be devoted to the GKs, so maybe expect something by the weekend because there are chores to be done too.

[NTSOG]

G'day WT,

I look forward to your pictures. Using wood that has obvious splits in a high load device worries me.

Jim

[Tiger650]

My spring compressor is a 400mm long piece of 32 x 25 alloy rectangular hollow section which I Tek screw to a door frame, piece of cloth under the muzzle to protect that and use the arrangement as a lever.
Have to be accurate with height of the Tek as you will be working close to the fulcrum for adequate leverage and "stroke" is limited.

[Wm.Traynor]

G'day WT,

Using wood that has obvious splits in a high load device worries me.

Jim

Me too, don't worry

[Wm.Traynor]

The MDF has been removed and Real Wood will be used in future (the GKs left earlier than expected). A different design will be employed this time and there will not be a blind hole for the breech-end to occupy. Instead, a piece of wood will be through-drilled to hold the breech-end captive. This piece will be attached to the load bearing timber. The latter will be secured with bolts, instead of screws and glue. The through-drilled piece in front of the load bearer will mean that the breech-end prongs will meet the load bearer (LB) evenly, negating the need for the LB to be at a slight angle to the line of force.
Well, that's the latest theory anyway.

I wish to thank the followers of this topic, for their patience in my journey with this project and I hope to reward them and myself soon.

[Wm.Traynor]

Today, the pieces of Real Wood were sawn up after some insignificant chores were dealt with. (Ever noticed that: there's always chores: always.) Now some bolts will need buying when I can get a lend of my wife's car. Not long now, I hope.

[Wm.Traynor]

The Spring Compressor is finished. Hallelujah! Glad that's over. Pics have been taken on my wife's phone but they refuse to upload. Tomorrow will have to be the day for that because we are getting ready to go out and celebrate my wife's 70th

[Wm.Traynor]

Project 10.jpg (204.09 KiB) Viewed 1219 times

Project 9.jpg (187.8 KiB) Viewed 1219 times

Project 1.jpg (204.09 KiB) Viewed 1219 times

[Wm.Traynor]

The piece of pine in the above pics, that is screwed to the block of red wood furthest from the G-Clamp, is drilled right through, the accept the breech-end of the compression tube. It is that red block, which resists the force of the spring. The hole in the pine is lined with thin leather, to avoid marring the very expensive finish on the tube. The belt idea came from a Yt video, although it is used in conjunction with some firm rubber between it and the very expensive etc., etc., etc..

Thank you everyone who contributed It works like a charm now. I can scarcely believe how good it is

[NTSOG]

G'day WT,

As long as you've come out of the 'exercise' with all body parts still attached and functional and the rifle shooting as it's meant, then that's what matters. Your compressor is a little more subtle?, delicate? than my monster, but I was using mine for some very big air rifles, e.g. .25 Webley-Scott Patriot, Diana 350 Magnum and my favourite HW 80.

Well done.

Jim

[Wm.Traynor]

Thanks Jim
Bill